Furnace



(No Model.)

B. TURNER.

I Furnace.

No; 240,935. Patented May 3,1881.

UNITED STATES PATENT OEEicE.

ALONZO B. TURNER, OF MOUNT SAVAGE, MARYLAND.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 240,935, dated May 3,1881.

Application filed March 7, 1881.

To all whom it may concern:

Be it known that I, ALONZO B. TURNER, acitizen of the United States,residingat Mount Savage, in the State of Maryland, haveinven ted certainnew and useful Improvements in Furnaces, 860., and I do hereby declarethe followin g to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanyin g drawings, and to the letters or figures of referencemarked thereon, which form a part of this specification.

My invention relates to a boiler-furnace of peculiar construction,having a spark-arrester and devices adapted to comsume the smoke, gases,and other products of combustion, and the novelty consists in theconstruction and arrangement of parts, as will be more fully hereinafterset forth.

The objects of the invention may be stated as follows: First, to admitair, both above and below the grate, in the combustion-chamber, tosupplyoxygen, not only to the heat-supplying and burning material, butalso the necessary amount thereof to consume the sparks and smoke in thecombustion-chainber, or before its exit; second, to deflect or torturethe sparks back into the combustion-chamber above the grate, While thesmoke and gases are allowed to be deflected back to the directfurnace-draft; third, to hold within the combustion-chamber each andevery element not consumed, and of heat-giving or combustible substance,until it is consumed, and its entire uscfulness is appropriated, as willbe set forth.

In carrying out the invention I employ a rectangular or other shapedframe, formed in sections and provided with horizontal grooves whichform air-chambers between the frame, which is of fire-brick, and themasonry or metal of the furnace proper, which surrounds the same.Between the horizontal grooves and recesses are short verticalconnecting recessed portions, perforated in such a manner as to admitthe air from the intervening chambers to the flames or fire, above thegrate. A tube-head is provided at the rear of the firebox, upon properprojections of which rests an oval deflector of fire-brick, and made insections, provided with longitudinal channels and (No model.)

lateral vertical connections thereto. This deflector forms the top ofthe-combustion-chamher, and presents a regular incline or deflectingsurface from the front of the furnace to a point near the exit of thecombastion-chamber, where a further deflecting-ledge serves to drive thesparks, 850., back to the coal-bed, while the gases, smoke, 850., passinto the longitudinal channels to be deflected to the exit, and thereconsumed by the intense heat at that point.

It will be understood that the device is equally applicable tolocomotive or stationary boilers, and that the device presented is afirebrick lining made in sections, adapted to serve in the furnace, andto provide a current of air in an intervening chamber, not only toprotect the furnace, but to supply oxygen at different heights withinthe combustion-chamber, to assist in the further utilization of theproducts of combustion, but to consume the gases and smoke which arecontained therein. The sparks are also arrested and deflected back tothe tire, where they are consumed.

The invention is fully illustrated in the accompanying drawings, whichform a part of this specification, and in which Figure 1 is alongitudinal section; Fig. 2, a transverse section, and Fig. 3 detailviews of the deflector.

Referring to the drawings, in which similar letters of referencerepresent like parts in all the figures, A represents the sides of thelining, made in sections, and provided with horizontal grooves, a; B,the front end, having corresponding sections and grooves, b, and O, therearsection,-havingthetube-shcetO. The horizontal grooves or recessesare connected by short vertical recesses, mm, which form the entireseries of grooves into an air-chamber, between the fire-brick lining andthe furnace proper, and these recesses 00 m connect, by apertures so asor, with the interior of the combustion-chamber, supplying oxygen fromthe outer air to the flame at different points of and utilize the gasesand smoke.

Upon the ledge formed by the tube-sheet G rests the lower end of anarched sectional dcflector, D, having resting-lips d, longitudinalpassage-chambers, d, and connecting vertical passages (1 Horizontalapertures d in the contact, to assist the combustion to destroy end Bconnect with the chambers d, and serve as a draft to force the gas andsmoke through the chambers 61 to the flame at the exit. This portion Dis so inclined as to deflect the ris ing sparks back into the fire, andto further this result I employ the more abrupt deflecting ledge D, asshown.

What I claim as new is l. A fire-brick lining made in sections andhaving on its outer surface horizontal grooves connected by verticalrecesses, forming an airchamber between the firehrick and the outercasing, said air-chamber having connections leading to thecombastion-chamber at different heights, as and for the purposesspecified.

2. The combination of the sides A and ends 15 and 0, made in sectionsand recessed, as shown, with the tube-sheet G and the removabledeflecting roof, as specified.

3. The spark arrester and deflector D, hav- In testimony whereof I alfixmy signature in presence of two witnesses.

ALONZO I3. TURNER.

\Vitnesses:

A. J. CARNEY, J OI-IN SAVILLE.

